Spring-casing.



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0. LAMPE.

SPRING OASING.

APPLICATION FILED 1320.16, 1912.

1 ,O80,567. Patented Dec. 9, 1513.

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COLUMBIA PLANOORAPH (10.. WA; NNNNNNNNNN C.

UNITED STATES PiTTENT OFFICE.

OTTO LAMPE, OF KONIGSBERG, GER-MANY, ASSIGNOR TO THE FIRM OF OTTO ZIMMERNAOHF, OF KONIGSBERG, GERMANY.

SPRING-CASING.

To all whom it may concern:

Be it known that I, O'r'ro LAMPE, a subject of the German Emperor, andresident of Konigsberg, Germany, have invented certain new and usefulImprovements in Spring-Casings, of which the following is aspecification.

This invention relates to improvements in spring-casings, particularlythose for foldable bells of goods-stands, which consist of twofolding-parts, with means for regulating the tension of the spring.Whereas in the known devices of similar type, an exact adjustment of thespring tension corresponding to the weight of the bell is not possible,the latter being balanced by a separate braking contrivance, which makesthe con struction of the bells very complicated, the subject matter ofthe present invention provides improved means by which an exactadjustment of the spring tension is effected in a simple way by thespring being connected at its free end with a movable ring, which bearswith its inner end against the spring casing and which is adjustablyconnected to the latter by means of a pressurescrew. Besides, thegoods-stand may be provided with a handle for carrying the same and forusing the bell for advertisement purposes.

In the accompanying drawing, Figure 1 is a front view of thegoods-stand. Fig. 2 is a front view, on a larger scale, of the springcasing with removed cover. Fig. 0 is a rear view of the spring casing.Fig. t is a horizontal section through the spring asing. Fig. 5 is aplan view of the latter. Figs. 6 and 7 are front views of a goodsstandwith handle, in open and closed position respectively.

The two folding parts 1 of a foldable bell, which is supported by aframe 2 and 3, are each provided on one trunnion with a spring casing.The frame member 2 carries near each trunnion of the bell a hole, inwhich the coupling pin 4: is inserted for the connection of the bellparts 1 with the springcasing 5. The bell parts 1 turn on diametricallyopposite pivots 6, which are fixed in any suitable way on the stand 1 1and which carry each an extension 9 for the reception of thespring-casing 5, which on one pivot belongs to one bell-part and onSpecification of Letters Patent.

Application fiIed December 16, 1912.

Patented Dec. 9, 1913.

Serial No. 737,134.

the opposite pivot to the other bell-part. In each spring casing, amovable ring 7 is located, which by a set-screw 8 can be pressed towardthe spring-casing 5 so as to turn with the latter. The spring 10 is in away known in the art fixed on the ring 7 and on the extension of thepivot O. In order to regulate the tension of the spiral spring 10, theremcwablc coupling pin 41 is removed and the spring casing 5 is, afterloosening the set-screw 8 a little, turned so far on the extension 9around the ring 7, which is then uncoupled from the spring casing, untilone presumes that after the following backward movement of the casingthe spring will become suiliciently tensioned. In this position of thecasing 5. the screw 8 is again tightened and thus the spring casingagain coupled with the ring 7, so that upon the now following baclnvanlmovement the easing 5 turns together with the ring 7 and tensions thespring, the coupling pin 1 being then again inserted in thecorresponding borings of the casing and the frame. It is obvious that inthis way the tension of the spring can be adjusted at will. In order tofix the bell in its open position, for filling and cleaning the stand,the casings") carries further a lever 11, which, when the hell 1 isturned down, can be pressed by hand into a notch 12 of the disk 13 inorder to fix the bell in its lowered position. Besides, the stand may befitted with a handle 15 for -arrying the Same and for using the bell foradvertisement purposes.

I claim:

In a spring-casing for the trunnions of foldable bells of goods-stands,in combination, a spiral spring fixed with one end to the trunnion ofthe bell, a movable ring inserted in the casing and connected with theother end of the spring, and a disengageable pressure-screw to act onthe ring and thus to fix the same in position within the casing, for thepurpose set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

OTTO LAMPE.

WVitnesses IIANS TYIBUHLE, M. HAMEKE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

